Apparatus for assembling sections of picture-frames.



No. 739,930, PATBNTBD SEPT. 29, 1903.

c. E. SANDSTROM. APPARATUS FOR ASSBMBLING smmous 0F PICTURE FRAMES.

APPLICATION FILED JAN. 2, 1902 F0 MODEL. 3 SHIAETB-SAIBBT l.

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No; 739,930. PATENTED SEPT. 29, 1903.

f 0. E. SANDSTROM. H I APPARATUS FOR-ASSEMBLING' SECTIONS 0? PICTURE FRAMES.

APPLICATION FILED JAN. 2, 1902.

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110,739,930. PA-TENTBD SEPT. 29, 1903! c. E. SANDSTROM.

APPARATUS FOR ASSEMBLING SECTIONS 0]? PICTURE FRAMES.

APPLICATION FILED JAN. 2,.1902.

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UNITED STATES Patented September 29, 1903.

PATENT OFFICE.

CHARLES E. SANDSTROM OF CHICAGO, ILLINOIS.

SPECIFICATION forming part of Letters latent No. 739,930, dated September 29, 1903. Application filed January 2, 1902. Serial No. 88,099 (No model.)

To all whom it may concern: I

Be it known that I, CHARLES E. SAND- STROM, a citizen of the United States, resid ing at 825 Mozart street, Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Apparatus for Assembling Sections of Picture-Frames, 850., of which the following is a specification.

My invention relates to a new and improved machine or apparatus for assembling sections, and I have shown it as applied-to a machine designed specifically to assemble and force together the sections which are used to make up the body of an oval'picture-frame, although it will be understood that it may be used to assemble sections of any similar article, such as some forms of .wheel-rims in which the separate sections are moved together radially, or substantially so, to bring them into position for gluing or otherwise uniting them.

To illustrate one form of IDY-IHVBH'LIOD, I annex hereto three sheets of drawings, in which the same reference characters are used to designate identical parts in all the figures, of which- Figure 1 is a plan view of the apparatus,

with the jaws expanded. Fig. 2 is an in-' verted plan view of the bed-plate of the machine with the remaining portions of the ap-. paratus removed. Fig. 3 is an inverted plan view of the cam-lever. Fig. 4 is a longitu-f dinal section, on an enlarged scale, on the line A A of Fig. 1. Fig. 5 is a detail view,- in section, through the fulcrum or pivotal point of the cam-lever. Fig. 6 is a sectional View through the yoke forming one end of the cam-lever, showinghow itis connected to the operating screw-shaft. Fig.7 is a plan View of the sections united, forming the body of one design of a picture-frame upon which my invention is designed to operate. Fig. 8 isa similar View showing another design. Fig. 9 is a plan view similar to Fig. 1, but show ing the jaws in their closed position. Fig. 10

is a sectional view through the belt-wheels on the line B B of Fig. 1, and Fig. 11 is a perspective view of-oneof the sections from which the frame is made.

The bed-plate 12 of the machine, as best shown in Figs. 1 and 2, may be of any doshaft.

sired shape ,andis preferably supported by the four legs or standards 13, projecting downwardly from and secured to the under side thereof. The bed-plate has formed therein or secured thereto a series of radial or substantially radial channels 14:, in which the sliding bars 15, to which the jaws 16 are secured, may be moved back and forth. The bars 15 have the slots 17 therein, so that the jaws may be adjusted thereon in any position that may be necessary by means of the bolts 18. A convenient method of forming the channels 14 is to. provide the under side of the bed-plate 12 with the channels cast integral therewith. Pivoted at the converging point of these channels is the cam-lever 19, which consists of the central spider 20, having the concentric cam slots or grooves 21, one for each slide, therein. The power-arm .22 of this cam-lever is provided at its outer end with a yoke 23, which has a pair of vertical elongated slots 24 therein through which pass the pieces 25, projecting upward and downward from the sleeve 26, mounted upon and held from longitudinal movement on the operating screw-shaft 27 by means of the collars 28, pinned or otherwise secured to said A convenient method-of pivoting the cam-lever 22 is to provide a pin 29, secured to and projecting downward from the bedplate at the converging point of the chan- A bearing-hub 30 is provided in the spider 20,through which the pin 29 passes,

nels.

and a collar 31, held in place by a set-screw '32, holds the cam-lever in its operative posi tlon.. Each of the slides 15 is provided with a pin 33, projecting downward from the un der surface and into its cooperating cam-slot 21. As I prefer to make these slots 21 of considerable depth in order to accommodate the projections formed by raising the slots above the surface of the spider, Icut away so much of the under side of the channels 14 as may be necessary, as shown at 34.

The operating screw-shaft 27,'as best seen in Figs. 1 and 10, has its screw-threaded end passing through a cooperating threaded aperture in the arm 35, projecting rearwardly from the bed-plate, while its other end may slide freely and rotate in a smooth-faced ap-- erture in the companion arm 36. Splined upon or otherwise rigidly secured to the opcrating screw-shaft 27 is a pair of pulleywheels 37 and 38, which are preferably provided with flanges 39 on the outer edges of their peripheries. 'Interposed between these fixed pulleys and of substantially the same width are the loose pulleys 40 and 41. Driven from the same line-shafting, preferably by pulleys of different diameters, so that the jaws will be opened rapidly and closed slowly, are a pair of belts 42 and 43, designed to cooperate with the pulleys 37 and 38, respectively, and one of them being crossed, so that they will drive the screw-shaft in opposite directions. A pair of guide stops or standards 44 and 45 are provided and secured in any convenient manner to project into the plane of the belts 42 and 43 to cooperate therewith under the circumstances to be set out. Conveniently secured upon the outer side of the yoke 23 is a bracket 46, which has provided thereon a grooved block 47, which has the end 48 thereof so shaped and adjusted as to fit upon the top of the periphery of the pulley-wheel 38 when it is desired to hold the belt 43 off of the pulley-wheel 38.

The frames 50 are made up of sections 51, which preferably have their meeting edges 52 tongued and grooved, as shown in Fig, 11. If it is desired to assemble the sections 51 to glue their edges together, the operation is as follows: The edges 52 having been'covered with glue, the sections or blocks are placed in the expanded jaws 16 of the machine, as indicated by dotted lines in Fig. 1. Of course the shape of the jaws will be varied to accommodate the different designs of frames that it may be desired to assemble. The parts being in the position shown in Fig. 1, the beltshifter is moved to throw the belts 42 and 43 from the idle pulleys 40 and 41 onto the fixed pulley 37 and the idle pulley 40, respectively. This causes the shaft 27 to rotate, and the action of its screw-threaded end with the screwthreaded aperture through which it passes in the arm 35 causes the shaft 27 to be moved gradually into the position shown in Fig. 9, during which movement the action of the camslots 21 on the pins 33 serves to draw the slides 15 and the jaws 16 carried thereby slowly but steadily into their closed position, in which the sections are brought together with their tongues and grooves intermeshed and in perfect alinement. As the limit of the movement of the shaft is reached the belt 42 strikes the stop 44 and the belts 42 and 43 are run onto the idle pulleys 40 and 41, respectively, so as to stop the movement when the frame is assembled. To reverse the operation, the block 47 is swung back to the position shown in dotted lines in Fig. 10, and the belts 42 and 43 may be swung either by the beltshifter or a tension caused by their abnormal displacement onto the idle pulley 41 and the fixed pulley 38, respectively, when the movement of the parts will be reversed until they reach their first position, as shown in Fig. 1, in which the stop 45 forces the bolts 43 and 42 from the fixed pulley 38 and the idle pulley 41, respectively, onto the idle pulleys 41 and 40, when the machine comes to a stop in its original position, when the assembled frame can be removed and a new set of blocks or sections put in place and the operation re: peated.

While I have shown my invention as embodied in the form which I at present consider best adapted to carryout its purposes,

it will be understood that it is capable of wide modifications and that I do not desire to be limited in the interpretation of the following claims except as may be necessitated by the state of the prior art. What I claim as new, and desire to secure by Letters Patent of the United States, is

1. In a device of the class described, the combination with the jaws adapted to receive and position the sections, of the supports therefor, means for adjusting the position of the jaws on their supports, mechanism cooperating with said supports for moving them toward each other and toward the center of the frame to assemble the sections, a screwthreaded power-shaft, a stationary nut with which it cooperates, and connections between said mechanism and power-shaft whereby the rotation of said shaft slowly closes the jaws simultaneously to assemble the sections.

2. In a device of the class described, the combination with the frame, of the movable supports mounted thereon, jaws secured to said supports and adapted to receive and 'position the sections, mechanism cooperating with the supports for bringing them together, a power-shaft for operating said mechanism requiring a plurality of rotations to move the aws from their open to their closed position, and means for automatically stopping the action of the power when the jaws are closed.

3. In a device of the class described, the combination with the frame, of the movable supports mounted thereon, jaws secured to said supports and adapted to receive and position the sections, mechanism cooperating with the supports to bring the jaws toward each other, the power-shaft for operating said mechanism requiringa plurality of rotations to move the jaws from their closed to their open position, and means for automatically stopping the action of the power when the jaws are fully opened.

4. In a device of the class described, the combination with the frame, of the sliding supports mounted thereon, jaws secured upon said supports and adapted to receive and position the sections, pins projecting downwardly from said slides, a cam-lever having. the eccentric slots into which said pins project for the purpose described, constantly-rotating power-wheels, and connections between said wheels and lever whereby said 1ever may be slowly swung in either direction at the will of the operator.

5. In a device of the class described, the combination with the frame, the sliding supports mounted thereon, the jaws carried by said supports and adapted to receive and position the sections, the slotted cam-lever 00- operating with the supports, constantly-rotating power-Wheels, and connections between said wheels and lever whereby said lever may be slowly swung in either direction at the will of the operator.

6 In a device of the class described, the combination with the frame, the sliding supports mounted thereon, the jaws carried by said supports and adapted to receive and position the sections, the slotted cam-lever cooperating with the supports, and means for swinging said lever slowly by power in either direction, consisting of the operating screwshaft mounted in a threaded bearing and having a loose collar thereon cooperating with a yoke on the end of the cam-lever, and means for rotating said shaft; alternately in opposite directions.

7. In a device of the class described, the combination with the frame, of the sliding supports mounted thereon, jaws secured to said supports and adapted to receive and position the sections, the cam-lever cooperating with said supports, means for swinging said lever slowly by power in either direction to open or close the jaws, and means for automatically stopping the action of the power when the jaws are closed.

8. In a device of the class described, the combination with .the frame, of the sliding supports mounted thereon, jaws secured to said supports and adaptedto receive and position the sections, the cam-lever cooperating with said supports, means for swinging said lever slowly by power in either direction to open or close the jaws, and means for automatically stopping the action of the power when the jaws are fully opened.

9. In a device of the class described, the combination with the frame, of the sliding supports mounted thereon, jaws secured to said supports and adapted to receive and position the sections, the cam-lever cooperating with said supports, means for swinging said lever slowly by power in either direction to open or close the jaws, and means for automatically-stopping the action of the power when the jaws reach the limit of their movement in either direction.

10. In a device of the class described, the combination of the frame,the supports mounted thereon, jaws carried by said supports and adapted to receive and position the sections, the cam-levercooperating with said supports, the operating screw-shaft mounted in a threaded bearing and having a loose collar thereon cooperating with the yoke on the end of the cam-lever, the driving-pulleys secured thereto, the idle pulleys journaled on said shaft between the driving-pulleys, and a pair of bolts moving in opposite directions while passing over the pulleys.

11. In a device of the class described, the combination of the frame,the supports mounted thereon, jaws carried by said supports and adapted to receive and position the sections, the cam-lever cooperating with said supports, the operatingscrew-shaft mounted in a threaded'bearing and having a loose collar thereon cooperating with the yoke on the end of the cam-lever, the driving-pulleys secured thereto, the idle pulleys journaled on said shaft between the driving-pulleys, a pair of belts moving in opposite directions while passingthereon cooperating with the yoke on the end of the cam-lever, the driving-pulleys secured thereto, the idle pulleys journaled onv said shaft between the driving-pulleys, a pair of belts moving in opposite directions while passing over the pulleys, and means for automatically shifting the driving-belt from the driving-pulley to the adjacent idle pulley as the limit of movement of the shaft in that direction is reached. 7

13. In a device of the class described, the combination of the frame,the supports mounted thereon, jaws carried by said supports and adapted to receive and position the sections, the cam-lever cooperating with said supports, the operating screw shaft mounted in a threaded bearing and having a loose collar thereon cooperating with the yoke on the end of the cam-lever, the driving-pulleys secured thereto, the'idle pulleys journaled on said shaft between the driving-pulleys, a pair of belts moving in opposite directions while passing over the pulleys, means for shifting. the

belts together from the idle pulleys to either of the driving-pulleys and the adjacent idle pulley, and means for automatically shifting the driving-belt from the driving-pulley to the adjacent idle pulley as the limit of movement of the shaft in that direction is reached.

14. In a device of theclass described, the combination of the frame,the supports mounted thereon, jaws carried by said supports and adapted to receive and position the sections, the cam-lever cooperating withsaid supports, the operating screw shaft mounted in a threaded bearing and havinga loose collar thereon cooperating with the yoke on the end of the cam-lever, the driving-pulleys secured thereto, the idle pulleys j ournaled on said shaft between the driving-pulleys, a pair of belts movi n g in opposite directions while passing over the pulleys, and means for automatically shifting'the driving-belt from the driv ing-pulley to the adjacent idle pulley as the limit of movementof the shaft in that direction is reached, consisting of properly-located stops with which the driving-pulley contacts as said limit is approached.'

15. In a device of the class described, the combination of the fran1e,the supports mounted thereon, jaws carried by said supports and adapted to receive and position the sections, the cam-lever cooperating with said supports, the operating screw shaft mounted in a threaded bearing and having a loose collar thereon cooperating with the yoke on the end of the cam-lever, the driving-pulleys secured 

